Door-check.



'NL J. LAWLER.

D003 CHECK.

APPLICATION FILED Amma, 191s.

Patented Mar. 11,1919.

MILES J. LAWJER, OF DENVER, COLORADO.

noon-CHECK.

Specification of Letters Patent.

PatentedMar. 11,1919.

Application led August 16, 1918. Serial No. 250,103.

To all whom t may concern.'

Be it known that'I, MILES J.

f citizen of the United States, residing at the city and county of Denver and 'State of Colorado, have invented certain new andy as will enable others skilled in the art to which it appertains to make' and use the same, reference beinghad to the accompanying drawings, and to the characters of reff erence marked thereon, which' forniy a part of this specification.

This invention relates to that type of door check which isr secured to the door. The

which will be simple, eiiicient, cheap to manufacture and will automatically return' to inoperative position.

Brieiy, the invention comprises a block to be secured to the door and a wedge connected to the block by a spring controlled link which will automatically return the wedge to inoperative position when the door is Vmoved sufficiently to free the wedge. There is a compensating connection between the wedge and the link to permit limited relative movement of the wedge horizontally. In the drawings:

Figure l is a side elevation ofthe device a plied to a door, the wedge and link being s own in operative position in dashed lines.

Fig. 2 is a front elevation indicated by line 2 2 of Fig. 1.

Fig. 3 is a vertical section on line 3-3 of Fig. 2, the door being omitted.

Fi 4 is a horizontal section on line 4 4 of Fig. 3.

Figs. 5 and 6 are sections taken on the lines 5 5 .and 6-6 respectively of Fig. 3.

The check comprises a door kblock 10, a link 20and a wedge 30.

The block 10 is provided with an elongated slot 15 and a hole 16 through which screws are passed to secure the block to a door B. The block is channeled out at 17 to receive the link 20 and is provided with side walls 18 to receive the wedge 30.

The lower end of link 20 is mounted in the block 10 by means of a pintle 2l about which a spring 22 is mounted, the loop of the spring seating in a recess 23 in the link and the ends 24 of the spring being em` bedded in the block 10.

The upper end of the link 20 is oiiset at LAWLER, a

i 25 and extends through a slot in the wedge i 30 between the walls 31 thereof. This slot is enlarged into an interior pocket 32 in which a reciprocating plunger 33 Vis located. The plunger has a recess 34 in one side thereof into which the offset end 25 of link 20 extends and in which it is pivotally mounted by pintle 35. The plunger has a reduced extension 36 which reciprocates in an apertured closure 37 fixed in the end of the pocket 32. A compression spring 38 is mounted on the extension 36 and its engagement between the closure 37 and a shoulder on the plunger 33 tends to maintain the plunger in the retracted position shown in Fig.

VWhen it is desired to use the check th operator presses upon the top of the wedge 30 forcing it down and outward against the tension of the spring 2l until it is placed in position upon the floor as indicated in Fig. 1. The door is then moved in the direction of the arrow a, Fig. 1, to secure the wedge, this motion being permitted by movement of the plunger 33 against the spring 38. Torelease the device the door is moved in a direction opposite to that indicated by arrow a, whereupon the springs 21 and 38 restore the parts to their normal positions as indicated in full lines in Figs. 1, 2 and 3.

In positioning the check on the door, the

check is given an approximately correct po- Y sition and a screw is then inserted in the slot 15 and partially screwed in. The check is then accurately positioned for proper operation of the wedge and the screw tightened. To positively retain the check in final position a screw is inserted in hole 16.

I claim:

1. A door check comprising a spring-controlled link adapted to be pivotally connected at one end with the door, a wedge movably connected with the other end of the link and a spring controlling the connection between the wedge and the link.

2. A door check comprising a spring-controlled link adapted to be pivotally connected at one end with a door, a wedge, and a spring-controlled plunger therein, the other end of said link being pivotally connected with said plunger, said parte being normally held in collapsed relation.

3. A door check comprising a block adapted to be secured to a door, a spring controlled link pivotally connected at one end with said block and normally helcl thereagainst, aweclge, and a Spring ControlledL plunger therein, the other end of said link being pivotally Connected with said plunger.

4. A door Cheek comprising a block adapted to be secured to a Idoor, a Spring-controlled link pivotally connected at one end with said block, a wedge, and a movable spring controlled connection between said wedge and the other end of Said link.

5. A door check comprising a block adapted to be secured to a door, a Spring-Controlled link pivotally Connected at one end with said block, a wedge having a pocket therein and a. slot communicating with said pocket, and a plunger in said pocket, the other end of said link being` pivotally connected with said plunger.

6. A door Check comprising a block adapti ed to be Secured to door and having a screw slot therein for adjusting the cheek on the. door, a spring-Controlled link pivotally Connected at one encl with said block, a wedge,

meme@ and a. pivotal spring controlled connection between the other end of the link and the wedge.

7. A door cheek comprising a block adapted to be secured to a door having` a- Screw slot therein for. adjusting the check on the door7 and a screw hole therein, a spring-controlled link pivotally connected at one end with the block, a wedge, and a movable pivotetl spring controlled connection between said wedge and the other end of said link.

8. A door check comprising a block adapted to be secured to the door, a spring-oontrollecl link pivotally connected at one end with the block, a wedge, a Connection between the' other end of the link and the wedge permitting pivotal motion therebetween, and a spring cont-rolling` the Connection lest named to restore the normal inoperative relation between the link and the wedge when the wedge is released.

In testimony whereof ai'lix my signature.

MLES J. LAWLER.

Gopes of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, "Washington, D. ti. 

